I decided that I needed to divide my power input up a bit. I have some servos that can only handle 5 volts and some that can handle 6. Most of the ones that will be running together handle 6. I decided to find a way to build a power distribution center for the 6V side. I found a board at RadioShack (cant stand that place) that worked perfectly. It has 2 strips in the middle. The pins in each of the columns connect to the same pin in the next row in the same column. Just off both sides of this it has three columns that are tied in each row. I soldered pin to the two middle columns to provide pos and neg power to the columns. I soldered pins to two pins that have connecting pads just to the side of the positive strip. This allows me to plug in the connections from my servos without cutting any wires. it also lets me take a single wire from the EZ-B to the last pin, connecting the signal from the EZ=B to the power board, which then connects to the signal wire on the servo. I power the board with a Turnigy UBEC with the jumper on it set to 6 volts. I have another Turnigy UBEC connecting to the EZ-B V4 set to 5 volts which is powering all of my sensors, camera and 5V servos. Right now, these are both being powered off of the same LIPO battery. As soon as I get another battery, the EZ-B will be powered off of one batter and the 6V board and thus servos will be powered off of another.
I ran some strips of velcro down the back side of the board where no power or signals are running and mounted it inside the front right side of the Wall-E I am working on. It works great and allows me to quickly move motors between 5 and 6 volts if I decide to. The Turnigy ubec's boast 92% efficiently with a 3A continuous feed. They can handle bursts of up to 5A. I will let you know how it works out.
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I have been playing around with a small PCB design for power distribution including voltage regulation, reservoir capacitors and over current protection however for a cheap and quick alternative this method works very well.
I also use similar for I2C distribution in Melvin.
Using some stackable headers and some standard headers you can pass the signal and the ground straight through the distribution board. A standard male header carries the power from an external regulated voltage supply (+5VDC in my case) to the peripherals and does not contact the V+ on the EZB v4. The pins on this straight header are all bridged using solder. The regular 3-pin connectors plug right into the top of the distribution board just like they would into the EZB itself. I made an 8 pin for the ADC channels and a 4 pin for the digital IO's. 4 pin is the max that can be done with 0.1" protoboard because the spacing is irregular between groups of 4 digital IO's on the EZB.
http://www.ebay.com/itm/like/281264983122?lpid=82
If you make distribution boards like this, I'd strongly recommend using a high quality double sided protoboard. Most protoboards are single sided and made of brittle material that will shatter a bit when you cut it. I've used protoboard made by Vector Electronics. This stuff you can cut like butter with a pair of tin snips and sand the edges down nice and clean.
J